package com.zjcloud.framework.config.properties;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.regex.Pattern;
import org.apache.commons.lang3.RegExUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import com.zjcloud.common.annotation.Anonymous;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 设置Anonymous注解允许匿名访问的url
 * 
 * @author ruoyi
 */
@Configuration
public class PermitAllUrlProperties implements InitializingBean, ApplicationContextAware
{
    private static final Logger log = LoggerFactory.getLogger(PermitAllUrlProperties.class);
    private static final Pattern PATTERN = Pattern.compile("\\{(.*?)\\}");

    private ApplicationContext applicationContext;

    private List<String> urls = new ArrayList<>();

    public String ASTERISK = "*";

    @Override
    public void afterPropertiesSet()
    {
        log.info("PermitAllUrlProperties afterPropertiesSet() called");
        RequestMappingHandlerMapping mapping = applicationContext.getBean(RequestMappingHandlerMapping.class);
        Map<RequestMappingInfo, HandlerMethod> map = mapping.getHandlerMethods();
        
        log.info("Found {} handler methods", map.size());

        map.keySet().forEach(info -> {
            HandlerMethod handlerMethod = map.get(info);
            
            log.info("Processing handler method: {} in class: {}", 
                handlerMethod.getMethod().getName(), handlerMethod.getBeanType().getName());

            // 获取方法上边的注解 替代path variable 为 *
            Anonymous method = AnnotationUtils.findAnnotation(handlerMethod.getMethod(), Anonymous.class);
            Optional.ofNullable(method).ifPresent(anonymous -> {
                log.debug("Found @Anonymous annotation on method: {}", handlerMethod.getMethod().getName());
                if (info.getPatternsCondition() != null && info.getPatternsCondition().getPatterns() != null) {
                    info.getPatternsCondition().getPatterns().forEach(url -> {
                        String processedUrl = RegExUtils.replaceAll(url, PATTERN, ASTERISK);
                        urls.add(processedUrl);
                        log.debug("Added anonymous URL from method: {}", processedUrl);
                    });
                }
            });

            // 获取类上边的注解, 替代path variable 为 *
            Anonymous controller = AnnotationUtils.findAnnotation(handlerMethod.getBeanType(), Anonymous.class);
            Optional.ofNullable(controller).ifPresent(anonymous -> {
                log.debug("Found @Anonymous annotation on controller: {}", handlerMethod.getBeanType().getSimpleName());
                if (info.getPatternsCondition() != null && info.getPatternsCondition().getPatterns() != null) {
                    info.getPatternsCondition().getPatterns().forEach(url -> {
                        String processedUrl = RegExUtils.replaceAll(url, PATTERN, ASTERISK);
                        urls.add(processedUrl);
                        log.debug("Added anonymous URL from controller: {}", processedUrl);
                    });
                }
            });
        });
        
        log.info("Total anonymous URLs loaded: {}", urls.size());
        urls.forEach(url -> log.debug("Anonymous URL: {}", url));
    }

    @Override
    public void setApplicationContext(ApplicationContext context) throws BeansException
    {
        this.applicationContext = context;
    }

    public List<String> getUrls()
    {
        return urls;
    }

    public void setUrls(List<String> urls)
    {
        this.urls = urls;
    }
}
